How to implement e2e testing with nuxtServerInit

I'm new about AVAJS and testing.
So forgive me about below question.
How can I implement the case of I have axios get function in my store INDEX in nuntServerInit.
I've try to mock this function 
```
actions = {
    nuxtServerInit: async () => true,
  };
```
but it seems not working, still called axios.
SO what shall I do? 
May I get any help here.